detours库hook之后，进程崩溃

Question

DetourAttach((PVOID*)(&m_GetProcAddress), m_GetProcAddressN);

FARPROC WINAPI m_GetProcAddressN(
    _In_ HMODULE hModule,
    _In_ LPCSTR lpProcName
) {

    FILE* fp = fopen("test.txt", "ab+");
    if (fp != NULL) {
        fwrite(lpProcName, strlen(lpProcName), 1, fp);
        fclose(fp);
    }
    return m_GetProcAddress(hModule, lpProcName);
}

static
FARPROC
(WINAPI*
m_GetProcAddress)(
    _In_ HMODULE hModule,
    _In_ LPCSTR lpProcName
)= GetProcAddress;

好像只要访问了lpProcName就会崩溃